CN102532910A - Double-component room-temperature vulcanized silicon rubber having adhesiveness and acidosis resistance and preparation method - Google Patents
Double-component room-temperature vulcanized silicon rubber having adhesiveness and acidosis resistance and preparation method Download PDFInfo
- Publication number
- CN102532910A CN102532910A CN2012100336121A CN201210033612A CN102532910A CN 102532910 A CN102532910 A CN 102532910A CN 2012100336121 A CN2012100336121 A CN 2012100336121A CN 201210033612 A CN201210033612 A CN 201210033612A CN 102532910 A CN102532910 A CN 102532910A
- Authority
- CN
- China
- Prior art keywords
- silicon rubber
- room temperature
- component room
- double
- temperature vulcanization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention relates to a double-component room-temperature vulcanized silicon rubber having adhesiveness and acidosis resistance and a preparation method, belonging to the field of polymer materials. The preparation method comprises the following steps: respectively carrying out a hydrosilylation termination reaction on alpha, gamma-divinyl polysiloxane and methyldimethoxysilane or trimethoxysilane so as to prepare alpha, gamma-di(dimethoxy or trimethoxy)polysiloxane in advance; mixing alkoxy terminated polysiloxane with an organic titanium catalyst; and then vulcanizing in a double-component form to obtain the product. The double-component room-temperature vulcanized silicon rubber disclosed by the invention is coated on a surface containing an acidic medium; and then by observation after 2 hours, the silicon rubber contacting with an acidic interface is in an acidosis state and can reach deep vulcanization, and the rubber material is completely vulcanized and has good substrate adhering effect.
Description
Technical field
The present invention relates to a kind of double component room temperature vulcanization silicon rubber, especially a kind of double component room temperature vulcanization silicon rubber and the method for manufacture thereof that can antiacidly poison, have cementability belongs to polymeric material field.
Background technology
Double component room temperature vulcanization silicon rubber generally is to be base polymer with α, γ-dihydroxyl ZGK 5 (being commonly called as 107 glue), and WHITE CARBON BLACK is a reinforced filling, and tetraethoxy is a linking agent, and dibutyl tin dilaurate is a catalyzer.Through with sneaking into WHITE CARBON BLACK in 107 glue as the A component, tetraethoxy mixes the component as B by a certain percentage with dibutyl tin dilaurate, and A, B component mix according to a certain percentage again, vacuum row bubble, self cure and obtain sulphurated siliastic.Because self cure need not heating, pressurization, the unstressed generation of sulfidation, thereby this sulphurated siliastic is widely used in electronics embedding and the artwork molding.But; In practical application, find; When double component room temperature vulcanization silicon rubber was used for embedding with the Zylox LED lamp band of high-temperature silicon disulfide rubber extrusion moulding or half groove lamp band, double component room temperature vulcanization silicon rubber and lamp band contact part were not vulcanized, through placement for a long time; Also be clamminess all the time, do not vulcanize.
The high-temperature silicon disulfide rubber extruded product, because employing is 2, the 4-dichlorobenzoperoxide is made vulcanizing agent; Hot-air vulcanization technology, therefore, if the hot sulfurization goods are incomplete without post cure or post cure; Vulcanizing agent degradation production 2,4 dichloro benzene formic acid then will residually be arranged in the goods.Because contain acidic substance in the silastic product, can cause organic tin compounds poisoning thus, promptly with the silastic product contact site, double component room temperature vulcanization silicon rubber is clamminess, and does not vulcanize.
In view of the above, the applicant has carried out following blank simultaneous test:
1, with the single-component room temperature vulcanized Zylox of depickling after the self cure film-making; On depickling sulfuration silicone rubber plate, apply double component room temperature vulcanization silicon rubber; Find that equally contacting the place with film can not vulcanize; For this reason, can think that residual acidic substance can cause organotin catalysts to be poisoned really in the silastic product, make double component room temperature vulcanization silicon rubber not vulcanize.
2, mix with 107 glue as catalyzer with organic titanium,, cause operation to carry out because the effect of titanium catalyst can produce very big viscosity peak again when linking agent and 107 glue carry out end capping.Therefore, double component room temperature vulcanization silicon rubber generally can only select for use organotin as catalyzer.
This shows that double component room temperature vulcanization silicon rubber well is used for the half groove goods that embedding high temperature silicon rubber is extruded, key is to solve the antiacid toxic of double component room temperature vulcanization silicon rubber, makes it have cohesiveness preferably again.
Summary of the invention
The objective of the invention is to double component room temperature vulcanization silicon rubber when embedding high temperature silicon rubber is extruded half groove goods; Organic tin compounds poisoning can't the sulfurized technical barrier, and a kind of antiacid poisoning, the double component room temperature vulcanization silicon rubber with cementability and method of manufacture thereof are provided.It is easy to use when this sulphurated siliastic had both kept the double component room temperature vulcanization silicon rubber self cure; Need not heat, pressurize; The unstressed generation of sulfidation, electrical isolation ability excellent characteristic has solved the cementability bad shortcoming of double component room temperature vulcanization silicon rubber sulfuration back with base material simultaneously again.Be the present invention cooperating through alkoxy end-capped ZGK 5 and organic titanium catalyzer; With the sizing material embedding when high temperature silicon rubber is extruded on the half groove goods; Not only be not clamminess with the goods surface in contact, and deep layer vulcanization, good cementability had with silastic product, LED lamp band.
For realizing the foregoing invention purpose; The present invention adopts α, γ-divinyl ZGK 5 to pass through the hydrosilation end capping with methyl dimethoxysilane or Trimethoxy silane respectively; Prepare α, γ-two (dimethoxy or trimethoxy) ZGK 5 in advance; Alkoxy end-capped ZGK 5 again with the organic titanium catalyst mix, thereby vulcanize the double component room temperature vulcanization silicon rubber product that obtains antiacid poisoning, has cementability then by the form of two components.
According to the foregoing invention main points, the concrete technical scheme that the present invention adopts is:
A kind of double component room temperature vulcanization silicon rubber that cementability and antiacid poisoning are arranged is characterized in that the mass parts of raw material consists of:
The A component
100 parts of alkoxy end-capped ZGK 5
0～50 part of WHITE CARBON BLACK
0～50 part of silicone resin
The B component
5 ~ 15 parts of organic titanium catalyzer
100 parts of methyl-silicone oils
Said alkoxy end-capped ZGK 5 is α, γ-two (dioxy base) ZGK 5 or α, γ-two (trimethoxy) ZGK 5, and its viscosity is 750～170000mpa s.
Said α, γ-two (dioxy base) ZGK 5 or α, γ-two (trimethoxy) ZGK 5; Content referring to record in the USP 4962174 is obtained through hydrosilation reaction with methyl dimethoxysilane or Trimethoxy silane respectively by α, γ-divinyl ZGK 5.
Said WHITE CARBON BLACK is a reinforced filling, adopts thermal silica or precipitated silica, and carries out its surface preparation through silazane.
Said silicone resin is a reinforced resin, specifically selects methyl MQ silicone resin for use.
Said organic titanium catalyzer is selected the title complex of titanic acid ester or titanic acid ester for use, specifically comprises isopropyl titanate, tetrabutyl titanate, the metatitanic acid tert-butyl ester, metatitanic acid etheric acid second fat title complex, metatitanic acid 1, ammediol title complex.
The viscosity of said methyl-silicone oil is 350mpa s.
Said have the method for manufacture of the double component room temperature vulcanization silicon rubber of cementability and antiacid poisoning may further comprise the steps:
One, the preparation of A component base-material
Get 100 parts of alkoxy end-capped ZGK 5, add 0 ~ 50 part of WHITE CARBON BLACK, heating mixed after 30～120 minutes under 120～160 ℃ of temperature in vacuum kneader, added 0 ~ 50 part of silicone resin again, high-speed stirring mix A component base-material;
Two, the preparation of B component base-material
With 100 parts of methyl-silicone oils, 5～15 parts of organic titaniums, high-speed stirring mixes and promptly obtains B component base-material;
Three, the preparation of product
At room temperature, A, B component base-material are mixed by the mass ratio of 100:2～10, promptly obtain the double component room temperature vulcanization silicon rubber product of cementability and antiacid poisoning.
The vacuum tightness of said vacuum kneader is≤-0.07MPa.
Because the double component room temperature vulcanization silicon rubber product that the present invention makes is mainly used in LED lamp band and is embedded in the embedding that high temperature silicon rubber is extruded the groove goods; Must do you thereby confirm that joint sealant vulcanizes fully? Whether adhesiveproperties good? As sulfuration whether fully the present invention, touches product surface and judges whether to be clamminess after 12 hours in the joint sealant self cure through directly catching; Crooked silastic product also tears joint sealant with hand, judges that whether bonding joint sealant and LED lamp band, Zylox well.Thereby the present invention has also carried out performance test by following standard to silicone rubber products:
Press GB/T 531.1-2008 test shore hardness
Press GB/T 528-2009 test tensile strength and tensile yield
Press GB/T 2408-2008 detecting electric intensity
Press GB/T 1410-2006 test volume resistivity
Press GB/T 1404-2006 test specific inductivity, dielectric loss
Press GB/T 2790-1995 test stripping strength
The technique effect that the present invention gives prominence to mainly shows:
1, not having the viscosity peak when sizing of the present invention and organic titanium catalyst mix occurs.
2, double component room temperature vulcanization silicon rubber product of the present invention with contain acid base material, when extruding the contact of half groove goods like high temperature silicon rubber, catalyzer can not poisoned again.
3, double component room temperature vulcanization silicon rubber product of the present invention can reach deep layer vulcanization when the embedding goods.
4, double component room temperature vulcanization silicon rubber product of the present invention has good cementability when the embedding goods.
When 5, double component room temperature vulcanization silicon rubber of the present invention carries out self cure, easy to use, need not heat, pressurize, the unstressed generation of sulfidation, electrical isolation can be good.
Embodiment
Through embodiment the present invention is made further specific descriptions below, be necessary to be pointed out that at this following examples only are used for the present invention is further explained, but should not be construed as restriction protection domain of the present invention.
Embodiment 1:
With viscosity is 100 parts of the alkoxy end-capped ZGK 5 of 750 mpa s, handles 30 parts of the Japanese NIPPON LP of company precipitated silicas, and 120 ℃ of heating mix and obtained A component base-material in 60 minutes in the vacuum kneader of vacuum tightness-0.07 MPa;
Press organic titanium catalyst consumption shown in the tabulation 1; Under 25 ℃; With organic titanium catalyst Ti isopropyl propionate, tetrabutyl titanate, the metatitanic acid tert-butyl ester, metatitanic acid etheric acid second fat title complex or metatitanic acid 1, ammediol title complex and viscosity is 100 parts of the methyl-silicone oils of 350 mpa s, and high-speed stirring mixes the B component base-material that obtains being numbered B1, B2, B3, B4, B5 respectively;
Each organic titanium catalyst consumption in the table 1 B component base-material
With 100 parts of A component base-materials; Mix by consumption listed in the table 2 with the B component base-material that is numbered B1, B2, B3, B4, B5 respectively; Promptly obtain the double component room temperature vulcanization silicon rubber product of cementability and antiacid poisoning, and then this silicone rubber products has been carried out following performance test by table 2 Listed Items.
The add-on of table 2 B component and the performance index of corresponding silicone rubber products
Embodiment 2:
Will be under 25 ℃ of temperature, viscosity is alkoxy end-capped ZGK 5 100 mass parts of 750 mpa s, adds MQ silicone resin 30 mass parts, stirring obtains A component base-material.
The preparation of B component base-material is identical with embodiment 1.
With 100 parts of A component base-materials; Mix by consumption listed in the table 3 with the B component base-material that is numbered B1, B2, B3, B4, B5 respectively; Promptly obtain the double component room temperature vulcanization silicon rubber product of cementability and antiacid poisoning, and then this silicone rubber products has been carried out following performance test by table 3 Listed Items.
The alkoxy end-capped ZGK 5 curability of table 3 MQ silicone resin reinforcement
Embodiment 3:
With the A component base-material (representing with A1, A2 respectively) of embodiment 1, embodiment 2 preparations and the isopropyl titanate catalyst reaction of B1 component, film-making is to test its physical and mechanical properties and electrical property; Simultaneously, adopt general alloy aluminum to carry out peel strength test again, to test its adhesiveproperties.Test result is seen table 4.
Table 4 sulphurated siliastic The performance test results
Remarks: A1+B1 self cure test in 7 days
A2+B1 self cure test in 15 days
" * " expression aluminium sheet and single-component room temperature vulcanized depickling silicone rubber plate
Claims (10)
1. double component room temperature vulcanization silicon rubber that cementability and antiacid poisoning are arranged is characterized in that the mass parts of raw material consists of:
The A component
100 parts of alkoxy end-capped ZGK 5
0～50 part of WHITE CARBON BLACK
0～50 part of silicone resin
The B component
5 ~ 15 parts of organic titanium catalyzer
100 parts of methyl-silicone oils.
2. double component room temperature vulcanization silicon rubber according to claim 1; It is characterized in that said alkoxy end-capped ZGK 5 is α, γ-two (dioxy base) ZGK 5 or α, γ-two (trimethoxy) ZGK 5, its viscosity is 750～170000mpa s.
3. double component room temperature vulcanization silicon rubber according to claim 2; It is characterized in that said α, γ-two (dioxy base) ZGK 5 or α, γ-two (trimethoxy) ZGK 5; Content referring to record in the USP 4962174 is obtained through hydrosilation reaction with methyl dimethoxysilane or Trimethoxy silane respectively by α, γ-divinyl ZGK 5.
4. double component room temperature vulcanization silicon rubber according to claim 1 is characterized in that said WHITE CARBON BLACK is a reinforced filling, adopts thermal silica or precipitated silica, and carries out its surface preparation through silazane.
5. double component room temperature vulcanization silicon rubber according to claim 1 is characterized in that said silicone resin is a reinforced resin, specifically selects methyl MQ silicone resin for use.
6. double component room temperature vulcanization silicon rubber according to claim 1 is characterized in that said organic titanium catalyzer, selects the title complex of titanic acid ester or titanic acid ester for use.
7. according to claim 1 or 6 described double component room temperature vulcanization silicon rubbers, it is characterized in that said organic titanium catalyzer specifically comprises isopropyl titanate, tetrabutyl titanate, the metatitanic acid tert-butyl ester, metatitanic acid etheric acid second fat title complex or metatitanic acid 1, ammediol title complex.
8. double component room temperature vulcanization silicon rubber according to claim 1, the viscosity that it is characterized in that said methyl-silicone oil is 350mpa s.
9. the method for manufacture of double component room temperature vulcanization silicon rubber according to claim 1 is characterized in that the concrete process step of this method is following:
One, the preparation of A component base-material
Get 100 parts of alkoxy end-capped ZGK 5, add 0 ~ 50 part of WHITE CARBON BLACK, heating mixed after 30～120 minutes under 120～160 ℃ of temperature in vacuum kneader, added 0 ~ 50 part of silicone resin again, high-speed stirring mix A component base-material;
Two, the preparation of B component base-material
With 100 parts of methyl-silicone oils, 5～15 parts of organic titaniums, high-speed stirring mixes and promptly obtains B component base-material;
Three, the preparation of product
At room temperature, A, B component base-material are mixed by the mass ratio of 100:2～10, promptly obtain the double component room temperature vulcanization silicon rubber product of cementability and antiacid poisoning.
10. the method for manufacture of double component room temperature vulcanization silicon rubber according to claim 9, the vacuum tightness that it is characterized in that said vacuum kneader for≤-0.07MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210033612.1A CN102532910B (en) | 2012-02-15 | 2012-02-15 | Double-component room-temperature vulcanized silicon rubber having adhesiveness and acidosis resistance and preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210033612.1A CN102532910B (en) | 2012-02-15 | 2012-02-15 | Double-component room-temperature vulcanized silicon rubber having adhesiveness and acidosis resistance and preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102532910A true CN102532910A (en) | 2012-07-04 |
| CN102532910B CN102532910B (en) | 2014-01-08 |
Family
ID=46341012
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210033612.1A Active CN102532910B (en) | 2012-02-15 | 2012-02-15 | Double-component room-temperature vulcanized silicon rubber having adhesiveness and acidosis resistance and preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102532910B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104017534A (en) * | 2014-05-07 | 2014-09-03 | 深圳百丽春新材料科技有限公司 | Transparent organic silicon LED light bar pouring sealant and preparation method thereof |
| CN104673180A (en) * | 2015-03-25 | 2015-06-03 | 广州市白云化工实业有限公司 | Condensed type double-component silicone sealant and preparation method thereof |
| CN110577661A (en) * | 2019-09-26 | 2019-12-17 | 昆山市中迪新材料技术有限公司 | Silicone membrane, heat-conducting silicone sheet and preparation method thereof |
| CN111320964A (en) * | 2020-03-20 | 2020-06-23 | 佛山市金云信硅材料制品有限公司 | Silicone sealant and preparation method thereof |
| CN115926471A (en) * | 2022-11-01 | 2023-04-07 | 扬州宏远新材料股份有限公司 | Liquid silicone rubber capable of increasing viscosity of glass fiber base material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56159251A (en) * | 1980-05-14 | 1981-12-08 | Toshiba Silicone Co Ltd | Room temperature curing polysiloxane composition |
| CN1139692A (en) * | 1995-03-08 | 1997-01-08 | 通用电气公司 | No solvent double-composition base paint combination for improving normal temp. adhesiveness between solidifiable siloxanes elastic body and base material |
| CN1191873A (en) * | 1997-02-26 | 1998-09-02 | 通用电气公司 | Two component fast-curing-RTV adhesive sealant suitable for low-ratio packaging |
| CN101580688A (en) * | 2009-06-12 | 2009-11-18 | 深圳市百丽春粘胶实业有限公司 | Dual-component silicone sealant formula used for construction and preparation thereof |
| CN101624446A (en) * | 2009-07-22 | 2010-01-13 | 朱旭 | Novel crosslinker of single-component de-alcoholized room temperature vulcanized silicone rubber and preparation method thereof |
-
2012
- 2012-02-15 CN CN201210033612.1A patent/CN102532910B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56159251A (en) * | 1980-05-14 | 1981-12-08 | Toshiba Silicone Co Ltd | Room temperature curing polysiloxane composition |
| CN1139692A (en) * | 1995-03-08 | 1997-01-08 | 通用电气公司 | No solvent double-composition base paint combination for improving normal temp. adhesiveness between solidifiable siloxanes elastic body and base material |
| CN1191873A (en) * | 1997-02-26 | 1998-09-02 | 通用电气公司 | Two component fast-curing-RTV adhesive sealant suitable for low-ratio packaging |
| CN101580688A (en) * | 2009-06-12 | 2009-11-18 | 深圳市百丽春粘胶实业有限公司 | Dual-component silicone sealant formula used for construction and preparation thereof |
| CN101624446A (en) * | 2009-07-22 | 2010-01-13 | 朱旭 | Novel crosslinker of single-component de-alcoholized room temperature vulcanized silicone rubber and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104017534A (en) * | 2014-05-07 | 2014-09-03 | 深圳百丽春新材料科技有限公司 | Transparent organic silicon LED light bar pouring sealant and preparation method thereof |
| CN104017534B (en) * | 2014-05-07 | 2016-04-06 | 深圳百丽春新材料科技有限公司 | A kind of transparent organic silicon LED lamp bar joint sealant and preparation method thereof |
| CN104673180A (en) * | 2015-03-25 | 2015-06-03 | 广州市白云化工实业有限公司 | Condensed type double-component silicone sealant and preparation method thereof |
| CN110577661A (en) * | 2019-09-26 | 2019-12-17 | 昆山市中迪新材料技术有限公司 | Silicone membrane, heat-conducting silicone sheet and preparation method thereof |
| CN110577661B (en) * | 2019-09-26 | 2022-02-01 | 江苏中迪新材料技术有限公司 | Silicone membrane, heat-conducting silicone sheet and preparation method thereof |
| CN111320964A (en) * | 2020-03-20 | 2020-06-23 | 佛山市金云信硅材料制品有限公司 | Silicone sealant and preparation method thereof |
| CN115926471A (en) * | 2022-11-01 | 2023-04-07 | 扬州宏远新材料股份有限公司 | Liquid silicone rubber capable of increasing viscosity of glass fiber base material and preparation method thereof |
| CN115926471B (en) * | 2022-11-01 | 2024-04-19 | 扬州宏远新材料股份有限公司 | Liquid silicone rubber with tackifying property on glass fiber base material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102532910B (en) | 2014-01-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103937442B (en) | High-adhesion single-component takes off oxime type room temperature vulcanized silicone rubber sealing agent and preparation method | |
| CN102844383B (en) | Curable resin composition, curable resin composition sheet, formed body, semiconductor sealing material, semiconductor device and photodiode | |
| CN102532910B (en) | Double-component room-temperature vulcanized silicon rubber having adhesiveness and acidosis resistance and preparation method | |
| CN100480350C (en) | Thermal pressed silicon rubber sheets and manufacture method thereof | |
| TWI278392B (en) | Thermally conductive composite sheet and manufacturing method thereof | |
| CN109661436A (en) | Solidification reactivity silicon gel and application thereof | |
| CN105131613B (en) | Addition type light-cured organic silicon rubber composition | |
| CN102666730B (en) | Silicone elastomer composition | |
| CN109689359A (en) | The manufacturing method of laminated body, its manufacturing method and electronic component | |
| WO2017070921A1 (en) | Two-component, addition-type, anti-sedimenttation conductive silicone rubber and preparation method thereof | |
| CN101787211B (en) | High-transparency and high-strength room temperature vulcanization organosilicon electron pouring sealant and preparation method and application thereof | |
| CN106085309A (en) | Automobile floor leather melt pressure sensitive glue composition and preparation method thereof | |
| JP6479657B2 (en) | Method for producing multilayer silicone structure | |
| CN1768606A (en) | Food die with heat conductivity and microwave activity | |
| CN109401322B (en) | Preparation method of silicon rubber material and electronic product | |
| CN112679958A (en) | Silicon rubber and preparation method thereof, and piezoresistor and preparation method thereof | |
| CN106905705A (en) | A kind of silicone sealant gel and preparation method thereof | |
| CN110511721B (en) | Special organic silicon adhesive for display lamination and preparation method thereof | |
| CN111004605A (en) | Self-adhesive organic silicon liquid silicone rubber for bonding glass substrate and forming process thereof | |
| JP2010509088A (en) | Three-dimensional molded product, manufacturing method thereof, and use thereof | |
| CN105647435B (en) | A kind of adhesive of IML and the preparation method and application thereof | |
| CN110016169A (en) | A kind of overlay film chlorinated butyl rubber bung and preparation method thereof | |
| CN105368068A (en) | High-temperature-resistant, high-breakdown-voltage and filler-free organic silicone rubber for sleeve | |
| CN104845375A (en) | Low-dielectric-constant liquid silicone rubber composite material and preparation method thereof | |
| CN112724685A (en) | Organic silicon heat-conducting sheet and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190802 Address after: 610000 No. 30, 4th Section of Renmin South Road, Chengdu City, Sichuan Province Patentee after: China Bluestar Chengrand Research Institute of Chemical Industry Co., Ltd. Address before: 611436 Industrial Park B, Xinjin County, Chengdu City, Sichuan Province Patentee before: LAN-STAR (Chengdu) new material Co., Ltd. |